need help with holley 750 d.p

The holley kit does come with the throttle bushings, but i don't think you'll need them, it most likely is flooding abit & it will seep out the shafts, you can get the kit from O'Reilly's, maybe even AutoZone, this will save you shipping, there like 38-40 bucks, it will have everything you'll need for a "complete" rebuild, just make sure you clean the parts thoroughly.